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BM6208FS PDF даташит

Спецификация BM6208FS изготовлена ​​​​«ROHM Semiconductor» и имеет функцию, называемую «3-Phase Brushless Fan Motor Driver».

Детали детали

Номер произв BM6208FS
Описание 3-Phase Brushless Fan Motor Driver
Производители ROHM Semiconductor
логотип ROHM Semiconductor логотип 

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BM6208FS Даташит, Описание, Даташиты
For Air-Conditioner Fan Motor
3-Phase Brushless Fan Motor
Driver
BM6208FS
General Description
This motor driver IC adopts PrestoMOS™ as the output
transistor, and put in a small full molding package with
the 180° sinusoidal commutation controller chip and the
high voltage gate driver chip. The protection circuits for
overcurrent, overheating, under voltage lock out and the
high voltage bootstrap diode with current regulation are
built-in. It provides optimum motor drive system and
downsizing the built-in PCB of the motor.
Features
600V PrestoMOS™ built-in
Output current 1.5A
Bootstrap operation by floating high side driver
(including diode)
180° sinusoidal commutation logic
PWM control (Upper and lower arm switching)
Phase control supported from 0° to +40° at 1°
intervals
Rotational direction switch
FG signal output with pulse number switch (4 or 12)
VREG output (5V/30mA)
Protection circuits provided: CL, OCP, TSD, UVLO,
MLP and the external fault input
Fault output (open drain)
Applications
Air conditioners; air purifiers; water pumps;
dishwashers; washing machines
Key Specifications
Output MOSFET Voltage:
600V
Driver Output Current (DC):
±1.5A (Max)
Driver Output Current (Pulse):
±2.5A (Max)
Output MOSFET DC On Resistance: 2.7(Typ)
Duty Control Voltage Range:
2.1V to 5.4V
Phase Control Range:
0° to +40°
Operating Case Temperature: -20°C to +100°C
Junction Temperature:
+150°C
Power Dissipation:
3.00W
Package
SSOP-A54_36
W (Typ) x D (Typ) x H (Max)
22.0 mm x 14.1 mm x 2.4 mm
SSOP-A54_36
Typical Application Circuit
VDC
GND
VCC
VSP
R1
C1
C2~C4
D1 C5 C6
C13
C7
C8
M
FG
HW HV HU
R2
C11
R3
Q1
DTR
VREG
R11 R9 R13
R4
R6 R5 C10 R12 R10 C14
R8
C12
Figure 1. Application Circuit Example
C9
R7
Product structure : Semiconductor IC This product is not designed protection against radioactive rays
.http://www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111 · 14 · 001
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TSZ02201-0828AB400160-1-2
24.Dec.2014 Rev.001









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BM6208FS Даташит, Описание, Даташиты
BM6208FS
Block Diagram and Pin Configuration
VCC
1
VCC
5
VSP
6
VSP
TEST
VREG
7
VREG
HWN
9
HW HWP
10
HVN
11
HV HVP
12
HUN
13
HU HUP
14
PCT
15
V/I
VREG
FAULT
PC
16
VREG
CCW
17
FGS
18
FG
19
FOB
20
TEST
VREG
6
A/D
VREG
FIB
FAULT
SNS
21
VREG
UH
UL
LOGIC VH
VL
WH
WL
SINUSOIDAL
WAVE GENE.
LEVEL
SHIFT
&
GATE
DRIVER
LEVEL
SHIFT
&
GATE
DRIVER
LEVEL
SHIFT
&
GATE
DRIVER
OSC
VSP
VDC
36
BU
35
U
34
BV
33
V
32
M
31 VDC
BW
30
W
29
PGND
28
GND
26
GND
24
RT
23
VCC
GND
GND
GND
VCC
VSP
VREG
NC
HWN
HWP
HVN
HVP
HUN
HUP
PCT
PC
CCW
FGS
FG
FOB
SNS
NC
RT
GND
GND
GND
VCC
Datasheet
VDC
BU
U
BV
V
VDC
BW
W
PGND
Figure 2. Block Diagram
Pin Descriptions (NC: No Connection)
Figure 3. Pin Configuration
(Top View)
Pin Name
Function
Pin Name
Function
1
VCC
Low voltage power supply
36
VDC
High voltage power supply
2
GND
Ground
- VDC
3
GND
Ground
4
GND
Ground
5
VCC
Low voltage power supply
35 BU Phase U floating power supply
6
VSP
Duty control voltage input pin
-
U
7 VREG Regulator output
34 U Phase U output
8 NC
9
HWN
Hall input pin phase W-
10
HWP
Hall input pin phase W+
33 BV Phase V floating power supply
11
HVN
Hall input pin phase V-
-V
12
HVP
Hall input pin phase V+
32 V Phase V output
13
HUN
Hall input pin phase U-
14
HUP
Hall input pin phase U+
15
PCT
VSP offset voltage output pin
16 PC Phase control input pin
- VDC
17
CCW
Direction switch (H:CCW)
31
VDC
High voltage power supply
18
FGS
FG pulse # switch (H:12, L:4)
19 FG FG signal output
20
FOB
Fault signal output (open drain)
21
SNS
Over current sense pin
30 BW Phase W floating power supply
22 NC
-W
23 RT Carrier frequency setting pin 29 W Phase W output
24
GND
Ground
25
GND
Ground
26
GND
Ground
- PGND
27
VCC
Low voltage power supply
28 PGND Ground (current sense pin)
Note) All pin cut surfaces visible from the side of package are no connected, except the pin number is expressed as a “-”.
http://www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
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TSZ02201-0828AB400160-1-2
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BM6208FS Даташит, Описание, Даташиты
BM6208FS
Datasheet
Description of Blocks
1. Commutation Logic
When the hall frequency is about 1.4-Hz or less (e.g. when the motor starts up), the commutation mode is 120° square
wave drive with upper and lower switching (no lead angle). The controller monitors the hall frequency, and switches to
180° sinusoidal commutation drive when the hall frequency reaches or exceeds about 1.4-Hz over four consecutive
cycles. Refer to the timing charts in figures 13 and 14.
HU
H
H
H
L
L
L
Table 1. 120° Commutation (Six-State) Truth Table
HV HW UH VH WH UL VL WL
L H L PWM L H PWM L--------------------
L L L L PWM H L PWM--------------------
H L L L PWM L H PWM--------------------
H L PWM L L PWM H L--------------------
H H PWM L
L PWM L--------------------
H
L H L PWM L L PWM H--------------------
2. Duty Control
The switching duty can be controlled by forcing DC voltage with value from VSPMIN to VSPMAX to the VSP pin. When the
VSP voltage is higher than VSPTST, the controller forces PC pin voltage to ground (Testing mode, maximum duty and no
lead angle). The VSP pin is pulled down internally by a 200 kresistor. Therefore, note the impedance when setting the
VSP voltage with a resistance voltage divider.
3. Carrier Frequency Setting
The carrier frequency setting can be freely adjusted by connecting an external
resistor between the RT pin and ground. The RT pin is biased to a constant
voltage, which determines the charge current to the internal capacitor. Carrier
frequencies can be set within a range from about 16 kHz to 50 kHz. Refer to the
formula to the right.
fOSC
[
kHz
]
RT
400
[ kohm ]
4. FG Signal Output
The number of FG output pulses can be switched in accordance with the number
of poles and the rotational speed of the motor. The FG signal is output from the FG
pin. The 12-pulse signal is generated from the three hall signals (exclusive NOR),
and the 4-pulse signal is the same as hall U signal. It is recommended to pull up
FGS pin to VREG voltage when malfunctioning because of the noise.
FGS
H
L
No. of pulse
12
4
5. Direction of Motor Rotation Setting
The direction of rotation can be switched by the CCW pin. When CCW pin is “H” or
open, the motor rotates at CCW direction. When the real direction is different from
the setting, the commutation mode is 120° square wave drive (no lead angle). It is
recommended to pull up CCW pin to VREG voltage when malfunctioning because
of the noise.
CCW
H
L
Direction
CCW
CW
6. Hall Signal Comparator
The hall comparator provides voltage hysteresis to prevent noise malfunctions. The bias current to the hall elements
should be set to the input voltage amplitude from the element, at a value higher than the minimum input voltage, VHALLMIN.
We recommend connecting a ceramic capacitor with value from 100 pF to 0.01 µF, between the differential input pins of
the hall comparator. Note that the bias to hall elements must be set within the common mode input voltage range
VHALLCM.
http://www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111 · 15 · 001
3/27
TSZ02201-0828AB400160-1-2
24.Dec.2014 Rev.001










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ROHM Semiconductor

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